Air
Air Handlers
RHML Series
Rheem Air Handlers
RHML- Series
X-13 (ECM) Motor
• RHML feature GE’s new X-13 (ECM) motor which provides
enhanced SEER performance with most Rheem outdoor units.
• 2 ton [7.0 kW] through 5 ton [17.6 kW] models are between
421/2 to 551/2 inches [1080 to 1410 mm] tall and 22 inches
[559 mm] deep.
• Versatile 4-way convertible design for upflow, downflow, horizontal left and horizontal right applications.
• Factory-installed high efficiency indoor coil.
• All models meet or exceed 330 to 400 CFM [156 to 189 L/s]
per ton at .3 inches [.7 kPa] of external static pressure.
• Enhanced airflow up to .7" external static pressure.
• Sturdy construction with 1.0 inch [.24 kPa] of reinforced foil
faced jacket insulation for excellent thermal and sound
insulation.
• Field-installed auxiliary electric heater kits provide exact heat
for indoor comfort. Kits include circuit breakers which meet UL
and cUL requirements for service disconnect.
FORM NO. H11-546
Air
Table of Contents
RHML Series
TABLE OF CONTENTS
Engineering Features ......................................................................................3
Model Number Identification ............................................................................4
Dimensional Data ........................................................................................5-6
Airflow Directional Data ..................................................................................6
Airflow Performance & Operating Limits ............................................................7
Airflow Performance Data ..........................................................................8-11
Electrical Data ........................................................................................12-13
Electrical Wiring ............................................................................................14
Limited Warranty ..........................................................................................15
2
Air
Engineering Features
RHML Series
Engineering Features
RHML- Series
■
The most compact unit design available, all standard heat air
handler models only 421/2 to 551/2 inches [1079 to 1409 mm]
high.
■ Attractive pre-painted cabinet exterior.
■ Rugged wall steel cabinet construction, designed for added
strength and versatility.
■ 1.0" foil faced insulation mechanically retained in blower
compartment for excellent thermal and sound performance.
■ Four leg blower motor mount.
■ Blower housing with controls, motor and blower. Slide out
design for service and maintenance convenience.
■ Traditional open wire element design for heat applications.
■ Field convertible for vertical downflow, horizontal left hand or
right hand air supply.
■ 3 combustible floor base accessories fit all model sizes when
required for downflow installations on combustible floors.
■ Indoor coil design provides low air side pressure drop, high
performance and extremely compact size.
■
Expansion valve on indoor coil provides for operation with air
conditioning or heat pump using the same coil.
■ Coils are constructed of aluminum fins bonded to internally
grooved copper tubing.
■ Molded polymer corrosion resistant condensate drain pan is
provided on all indoor coils.
■ Supply duct flanges provided as standard on air handler
cabinet.
■ Provisions for field electrical, connections available from either
side or top of the air handler cabinet.
■ Connection point for high voltage wiring is inside the air handler cabinet. Low voltage connection is made on the outside
of the air handler cabinet.
■ Concentric knockouts are provided for power connection to
cabinet. Installer may pull desired hole size up to 2 inches
[51 mm] for 11/2 inch [38 mm] conduit.
■ Front refrigerant and drain connections.
[ ] Designates Metric Conversions
3
Air
Model Number Identification
RHML Series
Model Number Identification
R
H
M
L
— HM 24 21
J
A
Design Variation
A = 1st Design
Voltage
J = 208/240/1/60
Cabinet Size
21 = 21" [533.4 mm] (1400-1600 CFM)
24 = 24.5" [609.6 mm] (1600-1800 CFM)
Capacity
24 = 18,000/24,000 BTU/H [5.27/7.03 kW]
36 = 30,000/36,000 BTU/H [8.79/10.55 kW]
48 = 42,000/48,000 BTU/H [12.31/14.06 kW]
60 = 60,000 BTU/H [17.58 kW]
HM = A/C or HP Multi-Position
(Vertical Upflow/Horizontal Left is the
factory configuration)
Refrigerant
L = R-410A
M = High Efficiency (X-13 (ECM) Motor)
Classification
H = Air Handler
Rheem
[ ] Designates Metric Conversions
4
Available Models at 218V J Voltage
RHML-HM2421JA
RHML-HM3621JA
RHML-HM4824JA
RHML-HM6024JA*
• Supply circuit protective devices may be fuses or
“HACR” type circuit breakers.
• Largest motor load is included in single circuit and
multiple circuit.
• If non-standard fuse size is specified, use the next
larger fuse size.
• J Voltage (230V) single-phase air handler is
designed to be used with single or three phase 230
volt power. In the case of connecting 3-phase
power to the air handler terminal block, bring only
two leads to the terminal block. Cap, insulate and
fully secure the third lead.
• The air handlers are shipped from the factory with
the proper indoor coil installed, and cannot be
ordered without a coil.
• The air handlers do not have an internal filter rack.
An external filter rack or other means of filtration is
required.
Air
Dimensional Data
RHML Series
Unit Dimensions
SUPPLY AIR
ELECTRICAL CONNECTIONS
MAY EXIT TOP OR EITHER SIDE
HIGH VOLTAGE CONNECTION 7/8 [22.2 mm],
13/32 [27.8 mm], 131/32 [50 mm] DIA. KNOCKOUTS.
NOTE: 24 CLEARANCE REQUIRED IN FRONT OF
UNIT FOR FILTER AND COIL MAINTENANCE.
105/16
[262 mm]
W
A
Return Air Opening Dimensions
LOW VOLTAGE CONNECTION
5/8 [15.9 mm] AND 7/8 [22.2 mm] KNOCKOUT
Model
Cabinet Size
Return Air
Opening Width
(Inches)
Return Air Opening
Depth/Length
(Inches)
17
21
24
157/8
193/8
227/8
193/4
193/4
193/4
H
AUXILIARY DRAIN CONNECTION
3/4 [19.1 mm] FEMALE PIPE THREAD (NPT)
HORIZONTAL APPLICATION ONLY
PRIMARY DRAIN CONNECTION
[19.1 mm] FEMALE PIPE THREAD (NPT)
3/4
AUXILIARY DRAIN CONNECTION
3/4 [19.1 mm] FEMALE PIPE THREAD (NPT)
UPFLOW/DOWNFLOW APPLICATION ONLY
191/2 [495 mm]
RETURN AIR
OPENING
2111/16
[551 mm]
LIQUID LINE CONNECTION
COPPER (SWEAT)
VAPOR LINE CONNECTION
COPPER (SWEAT)
UPFLOW UNIT SHOWN:
UNIT MAY BE INSTALLED UPFLOW, DOWNFLOW,
HORIZONTAL RIGHT OR LEFT AIR SUPPLY.
HORIZONTAL ADAPTER KIT
515/16
[151 mm]
41/8
1
[105 mm] 3 /16
[76 mm] 13/16 [48 mm] 11/8 [29 mm]
11/16
[27 mm]
13/8
[35 mm]
213/16
[71 mm]
VAPOR LINE
CONNECTION
AUXILIARY HORIZONTAL
DRAIN CONNECTION
PRIMARY DRAIN
CONNECTION
LIQUID LINE
CONNECTION
AUXILIARY UPFLOW/DOWNFLOW
DRAIN CONNECTION
VERTICAL DRAIN PAN
51/4
[133 mm]
53/8
[136 mm]
[ ] Designates Metric Conversions
( ) Designates Unit with Double Coil Cabinet
Unit Dimensions & Weights
Model
Size
RHML
Unit
Width
“W” In. [mm]
Unit
Height
“H” In. [mm]
Supply
Duct
“A” In. [mm]
2421
3621
4824
6024
211/2 [533]
211/2 [533]
241/2 [622]
241/2 [622]
421/2 [1080]
501/2 [1282]
551/2 [1410]
551/2 [1410]
191/2 [495]
191/2 [495]
231/2 [584]
231/2 [584]
Air Flow
CFM (Nom.) [L/s]
Lo
Hi
525 [248]
700 [330]
800 [377]
1050 [495]
1050 [495]
1400 [660]
1200 [566]
1600 [755]
Unit Weight/Shipping Weight (Lbs.) [kg]
Unit With
Coil (Max. KW)
97/112 [44/51]
150/166 [44/51]
181/198 [82/90]
181/198 [82/90]
5
Air
Airflow Directional Data
RHML Series
Airflow Directional Data
UPFLOW
HORIZONTAL LEFT
HAND AIRFLOW
6
DOWNFLOW
HORIZONTAL RIGHT
HAND AIRFLOW
Air
Airflow Performance Data & Operating Limits
RHML Series
Airflow Performance
below for both cooling and electric heat operation. For optimum blower performance, operate the unit in the .3 [8 mm] to
.7 inches [18 mm] W.C. external static range. Units with coils
should be applied with a minimum of .1 inch [3 mm] W.C.
external static range.
Airflow performance data is based on cooling performance
with a coil and no filter in place. Select performance table for
appropriate unit size, voltage and number of electric heaters to
be used. Make sure external static applied to unit allows operation within the minimum and maximum limits shown in table
Airflow Operating Limits
Model Cabinet Size
17
17/21
21
24
Cooling BTUH x 1,000
Cooling Tons Nominal
-018
1.5
-024
2
-030
2.5
-036
3
-038
3.5
-042
3.5
-048
4
-048
4
-060
5
Heat Pump or Air Conditioning
Maximum Heat/Cool CFM [L/s]
(37.5 CFM [18 L/s]/1,000 BTUH)
(450 CFM [212 L/s]/Ton Nominal)
675
[319]
900
[425]
1125
[531]
1350
[637]
1350
[637]
1575
[743]
1800
[850]
1800
[850]
1930
[911]
Heat Pump or Air Conditioning
Nominal Heat/Cool CFM [L/s]
(33.3 CFM [16 L/s]/1,000 BTUH)
(400 CFM [189 L/s]/Ton Nominal)
600
[283]
800
[378]
1000
[472]
1200
[566]
1200
[566]
1400
[661]
1600
[755]
1600
[755]
1800
[850]
Heat Pump or Air Conditioning
Minimum Heat/Cool CFM [L/s]
(30.0 CFM [14 L/s]/1,200 BTUH)
(360 CFM [170 L/s]/Ton Nominal)
540
[255]
720
[340]
900
[425]
1080
[510]
1080
[510]
1260
[595]
1440
[680]
1440
[680]
1620
[765]
Maximum kW Electric Heating
& Minimum Electric Heat CFM [L/s]
13
487 [230]
13
617 [291]
18
814 [384]
18
1054 [497]
18
1042 [492]
20
1171 [553]
25
1502 [709]
25
1502 [709]
30
1666 [786]
Maximum Electric Heat Rise °F [°C]
80 [26.7]
63 [17.2]
66 [18.9]
51 [10.6]
52 [11.1]
49 [9.4]
50 [10]
50 [10]
54 [12.2]
[ ] Designates Metric Conversions
7
8
2.0
2.0
-2421
No Heater
-2421
With 13 kW
Heater
Y1 Tap 4
Y2 Tap 5
Y1 Tap 4
Y2 Tap 5
Motor
Speed
From
Factory
Blower Size/
Motor
HP
# of Speeds
10X8
3/4 hp 5 speed
10X8
3/4 hp 5 speed
Manufacturer
Recommended
Air-Flow Range
(Min/Max) CFM
Y1=310/817 CFM
[146/385] L/s
Y2=445/951 CFM
[210/448] L/s
Y1=290/797 CFM
[136/376] L/s
Y2=425/931 CFM
[200/439] L/s
Tap 5
Y2
High Static
Tap 3
Y2
Low Static
Tap 4
Tap 2
Y1
Low Static
Y1
High Static
Tap 5
Y2
High Static
Tap 3
Y2
Low Static
Tap 4
Tap 2
Y1
Low Static
Y1
High Static
Motor
Speed
Y1, Y2
Speed
851
CFM
139
Watts
931
CFM
637
102
Watts
RPM
588
797
CFM
RPM
93
Watts
593
CFM
RPM
99
831
Watts
720
CFM
557
134
RPM
622
951
CFM
RPM
97
Watts
573
RPM
CFM
Watts
88
817
Watts
578
94
RPM
542
RPM
740
Watts
CFM
0.1 [.02]
151
687
891
93
603
679
98
614
684
77
576
549
146
672
911
88
588
699
93
599
704
72
561
569
0.2 [.05]
162
740
852
83
645
554
103
662
633
54
599
290
157
725
872
78
630
574
98
647
653
49
584
310
0.3 [.07]
173
787
804
74
717
495
108
726
570
—
—
—
168
772
824
69
702
515
103
711
590
—
—
—
0.4 [.10]
184
836
767
—
—
—
113
785
521
—
—
—
179
821
787
—
—
—
108
770
541
—
—
—
0.5 [.12]
[ ] Designates Metric Conversions
937
207
196
671
—
—
—
123
883
425
—
—
—
202
922
691
—
—
—
118
868
445
—
—
—
0.7 [.17]
895
722
—
—
—
118
829
469
—
—
—
191
880
742
—
—
—
113
814
489
—
—
—
0.6 [.15]
External Static Pressure—Inches W.C. [kPa]
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.8 [.20]
X-13 Wet Coil No Filter CFM Air Delivery/RPM/Watts-230 Volts
Notes: • All 208/240V PSC motors have voltage taps for 208 and 240 volts.
• All 208/240V PSC motors are shipped on high speed and 240 volts.
• If the application external static is less than 0.5" WC, adjust the motor speed to the low static speed as described below:
• Unplug the black motor wire off the relay on the control board and plug in the red motor wire.
• Replace the cap on the black motor wire.
• Voltage change (208/240V motors):
• Move the orange lead to transformer 208V tap from 240V tap. Replace the wire cap on 240V tap.
• Unplug the purple motor wire off the transformer and plug in the yellow motor wire.
• Replace the cap on the purple motor wire.
• The above airflow table lists the airflow information for air handlers without heater and air handler with maximum heater allowed for each model.
• The following formula can be used to calculate the approximate airflow, if a smaller (N kW) than the maximum heater kit is installed.
Approximate Airflow = Airflow without heater - (Airflow without heater - Airflow with maximum heater) x (N kW/maximum heater kW)
Nominal
Cooling
Capacity
Tons
Model
No.
RHML
Airflow Performance Data
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.9 [.22]
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1.0 [.25]
Air
Airflow Performance Data
RHML Series
3.0
3.0
-3621
No Heater
-3621 With
18 kW
Heater
Y1 Tap 4
Y2 Tap 5
Y1 Tap 4
Y2 Tap 5
Motor
Speed
From
Factory
Blower Size/
Motor
HP
# of Speeds
10X10
3/4 Hp 5 speed
10X10
3/4 Hp 5 speed
Manufacturer
Recommended
Air-Flow Range
(Min/Max) CFM
Y1=434/1005 CFM
[204/474] L/s
Y2=703/1328 CFM
[331/626] L/s
Y1=404/975 CFM
[190/460] L/s
Y2=673/1298 CFM
[317/612] L/s
Tap 5
Y2
High Static
Tap 3
Y2
Low Static
Tap 4
Tap 2
Y1
Low Static
Y1
High Static
Tap 5
Y2
High Static
Tap 3
Y2
Low Static
Tap 4
Tap 2
Y1
Low Static
Y1
High Static
Motor
Speed
Y1, Y2
Speed
1128
CFM
1098
CFM
202
Watts
1298
CFM
762
104
Watts
RPM
622
975
CFM
RPM
136
Watts
669
88
Watts
RPM
592
889
CFM
RPM
197
Watts
1328
CFM
737
99
RPM
597
RPM
CFM
Watts
131
1005
Watts
644
83
Watts
RPM
567
919
0.1 [.02]
RPM
CFM
840
226
214
1188
122
725
849
158
753
977
80
660
566
221
815
1218
117
700
879
153
728
1007
75
635
596
0.3 [.07]
798
1243
113
670
912
147
716
1037
84
609
727
209
773
1273
108
645
942
142
691
1067
79
584
757
0.2 [.05]
238
879
1134
132
815
786
169
829
916
76
716
404
233
854
1164
127
790
816
164
804
946
71
691
434
0.4 [.10]
250
932
1079
141
855
723
180
909
855
—
—
—
245
907
1109
136
830
753
175
884
885
67
—
—
0.5 [.12]
[ ] Designates Metric Conversions
262
1015
1025
150
893
660
192
946
794
—
—
—
257
990
1055
145
868
690
187
921
824
62
—
—
0.6 [.15]
274
1065
970
—
—
—
5
970
734
—
—
—
269
1040
1000
154
—
—
—
945
764
58
—
—
0.7 [.17]
External Static Pressure—Inches W.C. [kPa]
286
1090
298
1110
861
—
—
915
—
—
—
—
—
—
—
—
293
1085
891
173
—
—
—
—
—
—
—
—
0.9 [.22]
—
—
5
1011
673
—
—
—
281
1065
945
164
—
—
—
986
703
54
—
—
0.8 [.20]
X-13 Wet Coil No Filter CFM Air Delivery/RPM/Watts-230 Volts
Notes: • All 208/240V PSC motors have voltage taps for 208 and 240 volts.
• All 208/240V PSC motors are shipped on high speed and 240 volts.
• If the application external static is less than 0.5" WC, adjust the motor speed to the low static speed as described below:
• Unplug the black motor wire off the relay on the control board and plug in the red motor wire.
• Replace the cap on the black motor wire.
• Voltage change (208/240V motors):
• Move the orange lead to transformer 208V tap from 240V tap. Replace the wire cap on 240V tap.
• Unplug the purple motor wire off the transformer and plug in the yellow motor wire.
• Replace the cap on the purple motor wire.
• The above airflow table lists the airflow information for air handlers without heater and air handler with maximum heater allowed for each model.
• The following formula can be used to calculate the approximate airflow, if a smaller (N kW) than the maximum heater kit is installed.
Approximate Airflow = Airflow without heater - (Airflow without heater - Airflow with maximum heater) x (N kW/maximum heater kW)
Nominal
Cooling
Capacity
Tons
Model
No.
RHML
Airflow Performance Data
—
1142
806
—
—
—
—
—
—
—
—
—
305
1117
836
182
—
—
—
—
—
—
—
—
1.0 [.25]
Air
Airflow Performance Data
RHML Series
9
10
4.0
4.0
-4824
No Heater
-4824
With 25 kW
Heater
Y1 Tap 4
Y2 Tap 5
Y1 Tap 4
Y2 Tap 5
Motor
Speed
From
Factory
Blower Size/
Motor
HP
# of Speeds
11X11
3/4 hp 5 speed
11X11
3/4 hp 5 speed
Manufacturer
Recommended
Air-Flow Range
(Min/Max) CFM
Y1=702/1271 CFM
[331/599] L/s
Y2=992/1673 CFM
[468/789] L/s
Y1=672/1241 CFM
[314/582] L/s
Y2=962/1643 CFM
[451/772] L/s
Tap 5
Y2
High Static
Tap 3
Y2
Low Static
Tap 4
Tap 2
Y1
Low Static
Y1
High Static
Tap 5
Y2
High Static
Tap 3
Y2
Low Static
Tap 4
Tap 2
Y1
Low Static
Y1
High Static
Motor
Speed
Y1, Y2
Speed
1517
CFM
334
Watts
1643
CFM
751
169
Watts
RPM
611
1241
CFM
RPM
256
Watts
695
CFM
RPM
138
1487
Watts
1166
CFM
588
329
RPM
726
1673
CFM
RPM
164
Watts
Watts
586
CFM
RPM
251
1271
Watts
670
133
Watts
RPM
563
1196
RPM
CFM
0.1 [.02]
808
360
346
1546
173
675
1065
282
760
1375
139
623
864
355
783
781
1595
162
635
1121
270
729
1431
138
605
1016
341
756
1576
168
157
1625
650
1095
277
735
1405
134
610
1151
265
704
1461
133
598
894
1046
580
0.3 [.07]
0.2 [.05]
375
840
1497
185
716
1009
292
792
1317
140
668
789
370
815
1527
180
691
1039
287
767
1347
135
643
819
0.4 [.10]
383
866
1446
191
748
938
301
824
1267
141
721
672
378
841
1476
186
723
968
296
799
1297
136
696
702
0.5 [.12]
[ ] Designates Metric Conversions
954
420
410
394
1309
224
866
715
340
919
1114
—
—
—
415
929
1339
219
841
745
335
894
1144
—
—
—
0.8 [.20]
926
1351
216
837
783
327
892
1165
—
—
—
405
901
1381
211
812
813
322
867
1195
—
—
—
0.7 [.17]
895
1401
203
799
853
315
857
1217
—
—
—
389
870
1431
198
774
883
310
832
1247
—
—
—
0.6 [.15]
External Static Pressure—Inches W.C. [kPa]
X-13 Wet Coil No Filter CFM Air Delivery/RPM/Watts-230 Volts
Notes: • All 208/240V PSC motors have voltage taps for 208 and 240 volts.
• All 208/240V PSC motors are shipped on high speed and 240 volts.
• If the application external static is less than 0.5" WC, adjust the motor speed to the low static speed as described below:
• Unplug the black motor wire off the relay on the control board and plug in the red motor wire.
• Replace the cap on the black motor wire.
• Voltage change (208/240V motors):
• Move the orange lead to transformer 208V tap from 240V tap. Replace the wire cap on 240V tap.
• Unplug the purple motor wire off the transformer and plug in the yellow motor wire.
• Replace the cap on the purple motor wire.
• The above airflow table lists the airflow information for air handlers without heater and air handler with maximum heater allowed for each model.
• The following formula can be used to calculate the approximate airflow, if a smaller (N kW) than the maximum heater kit is installed.
Approximate Airflow = Airflow without heater - (Airflow without heater - Airflow with maximum heater) x (N kW/maximum heater kW)
Nominal
Cooling
Capacity
Tons
Model
No.
RHML
Airflow Performance Data
432
981
1259
—
—
—
356
965
1038
—
—
—
427
956
1289
—
—
—
351
940
1068
—
—
—
0.9 [.22]
446
1008
1209
—
—
—
370
1009
962
—
—
—
441
983
1239
—
—
—
365
984
992
—
—
—
1.0 [.25]
Air
Airflow Performance Data
RHML Series
5.0
5.0
-6024
No Heater
-6024
With 30 kW
Heater
Y1 Tap 4
Y2 Tap 5
Y1 Tap 4
Y2 Tap 5
Motor
Speed
From
Factory
Blower Size/
Motor
HP
# of Speeds
11X11
3/4 hp 5 speed
11X11
3/4 hp 5 speed
Manufacturer
Recommended
Air-Flow Range
(Min/Max) CFM
Y1=785/1350 CFM
[370/637] L/s
Y2=1249/1844 CFM
[589/870] L/s
Y1=745/1310 CFM
[353/620] L/s
Y2=1209/1804 CFM
[570/851] L/s
Tap 5
Y2
High Static
Tap 3
Y2
Low Static
Tap 4
Tap 2
Y1
Low Static
Y1
High Static
Tap 5
Y2
High Static
Tap 3
Y2
Low Static
Tap 4
Tap 2
Y1
Low Static
Y1
High Static
Motor
Speed
Y1, Y2
Speed
1686
CFM
355
1646
CFM
439
Watts
1804
CFM
824
184
Watts
RPM
642
1310
CFM
RPM
339
Watts
763
170
Watts
RPM
621
1240
CFM
RPM
434
Watts
453
853
1756
203
684
1256
360
800
1592
175
465
882
1713
210
725
1200
367
831
1546
180
695
1094
1156
650
460
852
1753
205
695
1240
362
801
1586
175
448
823
1796
794
1844
CFM
RPM
198
612
179
654
1296
RPM
CFM
770
1632
170
665
1134
1196
620
0.3 [.07]
0.2 [.05]
Watts
334
1350
Watts
733
165
Watts
RPM
591
1280
0.1 [.02]
RPM
CFM
475
910
1662
230
764
1148
375
860
1498
197
740
1040
470
880
1702
225
734
1188
370
830
1538
192
710
1080
0.4 [.10]
495
938
1615
241
802
1090
392
893
1451
205
772
971
490
908
1655
236
772
1130
387
863
1491
200
742
1011
0.5 [.12]
[ ] Designates Metric Conversions
507
968
1572
247
841
1027
399
921
1407
214
811
905
502
938
1612
242
811
1067
394
891
1447
209
781
945
0.6 [.15]
517
998
1526
258
870
962
416
952
1360
225
848
840
512
968
1566
253
840
1002
411
922
1400
220
818
880
0.7 [.17]
External Static Pressure—Inches W.C. [kPa]
535
1027
545
1050
1438
281
265
1480
938
809
443
1012
1258
558
1074
1389
—
—
—
455
1038
1209
—
—
—
—
—
—
553
1044
1429
—
—
—
450
1008
540
1020
1478
276
908
849
438
982
1249
—
1298
—
—
—
—
—
1.0 [.25]
0.9 [.22]
904
891
429
983
1312
236
883
745
530
997
1520
260
874
931
424
953
1352
231
853
785
0.8 [.20]
X-13 Wet Coil No Filter CFM Air Delivery/RPM/Watts-230 Volts
Notes: • All 208/240V PSC motors have voltage taps for 208 and 240 volts.
• All 208/240V PSC motors are shipped on high speed and 240 volts.
• If the application external static is less than 0.5" WC, adjust the motor speed to the low static speed as described below:
• Unplug the black motor wire off the relay on the control board and plug in the red motor wire.
• Replace the cap on the black motor wire.
• Voltage change (208/240V motors):
• Move the orange lead to transformer 208V tap from 240V tap. Replace the wire cap on 240V tap.
• Unplug the purple motor wire off the transformer and plug in the yellow motor wire.
• Replace the cap on the purple motor wire.
• The above airflow table lists the airflow information for air handlers without heater and air handler with maximum heater allowed for each model.
• The following formula can be used to calculate the approximate airflow, if a smaller (N kW) than the maximum heater kit is installed.
Approximate Airflow = Airflow without heater - (Airflow without heater - Airflow with maximum heater) x (N kW/maximum heater kW)
Nominal
Cooling
Capacity
Tons
Model
No.
RHML
Airflow Performance Data
Air
Airflow Performance Data
RHML Series
11
Air
Electrical Data
RHML Series
Electrical Data – Blower Motor Only – No Electric Heat
Model
Circuit
Amps.
Minimum
Circuit
Ampacity
Maximum
Circuit
Protector
300-1100
4
1.6
2
15
300-1100
4
3.8
5
15
4
4.6
6
15
Phase*
Hertz
HP
1/3
208/240
1&3
60
3/4
3/4
300-1100
2421
3621
Speeds
Voltage
6024/4824
RPM
* Blower motors are all single phase motors.
Electrical Data – With Electric Heat
Installation of the U.L. Listed original equipment manufacturer provided heater kits listed in the following table is recommended for all
auxiliary heating requirements.
Air Handler
Model
(-)HML
2421
Circuit
Amps.
1-3.0
SINGLE
1-4.8
SINGLE
2-3.6
1/60
9.4/12.5
Heater kW
(208/240V)
(480V)
Motor
Ampacity
Minimum
Circuit
Ampacity
Maximum
Circuit
Protector
RXBH-1724?03J
2.25/3.0
1/60
RXBH-1724?05J
3.6/4.8
1/60
10.8/12.51.6
1.6
16/18
20/20
17.3/20.0
1.6
24/27
RXBH-1724?07J
5.4/7.2
1/60
25/30
SINGLE
26.0/30.0
1.6
35/40
RXBH-1724?10J
7.2/9.6
35/40
2-4.8
SINGLE
34.6/40.0
1.6
46/52
RXBH-1724A13J
50/60
1/60
3-4.17
SINGLE
45.1/52.1
1.6
59/68
60/70
3.1/4.2
1/60
1-4.17
MULTIPLE CKT 1
15.0/17.4
1.6
21/24
25/25
6.3/8.3
1/60
2-4.17
MULTIPLE CKT 2
30.1/34.7
0
38/44
40/45
RXBH-1724A07C
5.4/7.2
3/60
3-2.4
SINGLE
15.0/17.3
1.6
21/24
25/25
RXBH-1724A10C
7.2/9.6
3/60
3-3.2
SINGLE
20.0/23.1
1.6
27/31
30/35
RXBH-1724A13C
9.4/12.5
3/60
3-4.17
SINGLE
26.1/30.1
1.6
35/40
35/40
RXBH-1724?05J
3.6/4.8
1/60
1-4.8
SINGLE
17.3/20.0
3.8
27/30
30/30
RXBH-1724?07J
5.4/7.2
1/60
2-3.6
SINGLE
26.0/30.0
3.8
38/43
40/45
RXBH-1724?10J
7.2/9.6
1/60
2-4.8
SINGLE
34.6/40.0
3.8
48/55
50/60
RXBH-1724A15J
10.8/14.4
1/60
3-4.8
SINGLE
51.9/60.0
3.8
70/80
70/80
3.6/4.8
1/60
1-4.8
MULTIPLE CKT 1
17.3/20.0
3.8
27/30
30/30
7.2/9.6
1/60
2-4.8
MULTIPLE CKT 2
34.6/40.0
0.0
44/50
45/50
12.8/17.0
1/60
4-4.26
SINGLE
61.6-70.8
3.8
82/94
90/100
6.4/8.5
1/60
2-4.26
MULTIPLE CKT 1
30.8/35.4
3.8
44/49
45/50
6.4/8.5
1/60
2-4.26
MULTIPLE CKT 2
30.8/35.4
0.0
39/45
40/45
RXBH-1724A07C
5.4/7.2
3/60
3-2.4
SINGLE
15.0/17.3
3.8
24/27
25/30
RXBH-1724A10C
7.2/9.6
3/60
3-3.2
SINGLE
20.0/23.1
3.8
30/34
30/35
RXBH-1724A15C
10.8/14.4
3/60
3-4.8
SINGLE
30.0/34.6
3.8
43/48
45/50
RXBH-1724A18C
12.8/17.0
3/60
3-2.84
SINGLE
35.6-41.0
3.8
50/56
50/60
RXBH-1724B05J
3.6/4.8
1/60
1-4.8
SINGLE
17.3/20.0
3.8
27/30
30/30
RXBH-1724B07J
5.4/7.2
1/60
2-3.6
SINGLE
26.0/30.0
3.8
38/43
40/45
RXBH-1724B10J
7.2/9.6
1/60
2-4.8
SINGLE
34.6/40.0
3.8
48/55
60/60
RXBH-1724A13J
RXBH-1724A15J
RXBH-1724A18J
(-)HML
3621
Type Supply
Circuit
Single Circuit
Multiple Circuit
Heater
Model
No.
RXBH-1724A18J
Ph/Hz
No.
Elements
- kW Per
• ? Heater Kit Connection Type A = Breaker B = Terminal Block C = Pullout Disconnect
➀ D Voltage = 480 Volts.
*Values only. No single point kit available.
NOTES:
• Electric heater BTUH - (heater watts + motor watts) x 3.414 (see airflow table for motor watts.)
• Supply circuit protective devices may be fuses or “HACR” type circuit breakers.
• If non-standard fuse size is specified, use next size larger standard fuse size.
• Largest motor load is included in single circuit or circuit 1 of multiple circuits.
• Heater loads are balanced on 3 phase models with 3 or 6 heaters only.
• No electrical heating elements are permitted to be used with A voltage (115V) air handler.
12
• J voltage (208/240V) single phase air handler is designed to be used with single or three phase
208/240V volt electric heaters. In the case of connecting 3 phase power to air handler terminal block
without the heater, bring only two leads to terminal block, cap, insulate and fully secure the third lead.
• Do not use 480V electrical heaters on 208/240V air handlers.
• If the kit is listed under both single and multiple circuits, the kit is shipped from factory as multiple
circuits. For single phase application, Jumper bar kit RXBJ-A21 and RXBJ-A31 can be used to convert
multiple circuits to a single supply circuit. Refer to Accessory Section for details.
[ ] Designates Metric Conversions
Air
Electrical Data
RHML Series
Electrical Data – With Electric Heat
Installation of the U.L. Listed original equipment manufacturer provided heater kits listed in the following table is recommended for all
auxiliary heating requirements.
Air Handler
Model
Heater
Model
No.
Heater kW
(208/240V)
(480V)
Ph/Hz
No.
Elements
- kW Per
Type Supply
Circuit
Single Circuit
Multiple Circuit
Circuit
Amps.
Motor
Ampacity
Minimum
Circuit
Ampacity
Maximum
Circuit
Protector
RXBH-1724?07J
5.4/7.2
1/60
2-3.6
SINGLE
26.0/30.0
4.6
39/44
40/45
RXBH-1724?10J
7.2/9.6
1/60
2-4.8
SINGLE
34.6/40.0
4.6
49/56
50/60
RXBH-1724A15J
10.8/14.4
1/60
3-4.8
SINGLE
51.9/60.0
4.6
71/81
80/90
30/35
RXBH-1724A15J
RXBH-1724A18J
RXBH-1724A18J
RXBH-24A20J
RXBH-24A20J
RXBH-24A25J
RXBH-24A25J
(-)HML
4824
6024
RXBH-24A30J
(5-ton only)
3.6/4.8
1/60
1-4.8
MULTIPLE CKT 1
17.3/20.0
4.6
28/31
7.2/9.6
1/60
2-4.8
MULTIPLE CKT 2
34.6/40.0
0
44/50
45/50
12.8/17
1/60
4-4.26
SINGLE
61.8/70.8
4.6
83/95
90/100
45/50
6.4/8.5
1/60
2-4.26
MULTIPLE CKT 1
30.8/35.4
4.6
45/50
6.4/8.5
1/60
2-4.6
MULTIPLE CKT 2
30.8/35.4
0
39/45
40/45
14.4/19.2
1/60
4-4.8
SINGLE
69.2/80
4.6
93/106
100/110
7.2/9.6
1/60
2-4.8
MULTIPLE CKT 1
34.6/40.0
4.6
49/56
50/60
7.2/9.6
1/60
2-4.8
MULTIPLE CKT 2
34.6/40.0
0
44/50
45/50
18.0/24.0
1/60
6-4.0
SINGLE
86.4/99.9
4.6
114/131
125/150
6.0/8.0
1/60
2-4.0
MULTIPLE CKT 1
28.8/33.3
4.6
42/48
45/50
6.0/8.0
1/60
2-4.0
MULTIPLE CKT 2
28.8/33.3
0
36/42
40/45
6.0/8.0
1/60
2-4.0
MULTIPLE CKT 3
28.8/33.3
0
36/42
40/45
21.6/28.8
1/60
6-4.8
SINGLE
103.8/120
4.6
136/156
150/175
7.2/9.6
1/60
2-4.8
MULTIPLE CKT 1
34.6/40.0
4.6
49/56
56/60
7.2/9.6
1/60
2-4.8
MULTIPLE CKT 2
34.6/40.0
0
44/50
56/60
7.2/9.6
1/60
2-4.8
MULTIPLE CKT 3
34.6/40.0
0
44/50
56/60
RXBH-1724A07C
5.4/7.2
3/60
3-2.4
SINGLE
15.0/17.3
4.6
25/28
25/30
RXBH-1724A10C
7.2/9.6
3/60
3-3.2
SINGLE
20.0/23.1
4.6
31/35
35/35
RXBH-1724A15C
10.8/14.4
3/60
3-4.8
SINGLE
30.0/34.6
4.6
44/49
45/50
RXBH-24A30J
(5-ton only)
RXBH-1724A18C
12.8/17.0
3/60
3-2.84
SINGLE
35.6-41.0
4.6
51/57
60/60
RXBH-24A20C*
14.4/19.2
3/60
3-3.2
SINGLE
40.0-46.2
4.6
56/64
60/70
7.2/9.6
3/60
3-3.2
MULTIPLE CKT 1
20.0/23.1
4.6
31/35
35/35
7.2/9.6
3/60
3-3.2
MULTIPLE CKT 2
20.0/23.1
0
25/29
25/30
18.0/24.0
3/60
6-4.0
SINGLE
50.0/57.8
4.6
69/78
70/80
9.0/12.0
3/60
3-4.0
MULTIPLE CKT 1
25.0/28.9
4.6
37/42
40/45
9.0/12.0
3/60
3-4.0
MULTIPLE CKT 2
25.0/28.9
0
32/37
35/40
21.6/28.8
3/60
6-4.8
SINGLE
60.0/69.4
4.6
81/93
90/100
RXBH-24A20C
RXBH-24A25C*
RXBH-24A25C
RXBH-24A30C*
(5-ton only)
RXBH-24A30C
(5-ton only)
10.8/14.4
3/60
3-4.8
MULTIPLE CKT 1
30.0/34.7
4.6
44/50
45/50
10.8/14.4
3/60
3-4.8
MULTIPLE CKT 2
30.0/34.7
0
38/44
40/45
• ? Heater Kit Connection Type A = Breaker B = Terminal Block C = Pullout Disconnect
➀ D Voltage = 480 Volts.
*Values only. No single point kit available.
NOTES:
• Electric heater BTUH - (heater watts + motor watts) x 3.414 (see airflow table for motor watts.)
• Supply circuit protective devices may be fuses or “HACR” type circuit breakers.
• If non-standard fuse size is specified, use next size larger standard fuse size.
• Largest motor load is included in single circuit or circuit 1 of multiple circuits.
• Heater loads are balanced on 3 phase models with 3 or 6 heaters only.
• No electrical heating elements are permitted to be used with A voltage (115V) air handler.
• J voltage (208/240V) single phase air handler is designed to be used with single or three phase
208/240V volt electric heaters. In the case of connecting 3 phase power to air handler terminal block
without the heater, bring only two leads to terminal block, cap, insulate and fully secure the third lead.
• Do not use 480V electrical heaters on 208/240V air handlers.
• If the kit is listed under both single and multiple circuits, the kit is shipped from factory as multiple
circuits. For single phase application, Jumper bar kit RXBJ-A21 and RXBJ-A31 can be used to convert
multiple circuits to a single supply circuit. Refer to Accessory Section for details.
[ ] Designates Metric Conversions
13
Electrical Wiring
RHML Series
Air
Electrical Wiring
Power Wiring
Grounding
• Field wiring must comply with the National Electrical Code
(C.E.C. in Canada) and any applicable local ordinance.
• This product must be sufficiently grounded in accordance with
National Electrical Code (C.E.C. in Canada) and any applicable
local ordinance.
• Supply wiring must be 75°C minimum copper conductors only.
• See electrical data for product Ampacity rating and Circuit
Protector requirement.
• A grounding lug is provided.
Accessories
• Combustible Floor Base RXHB-
• Auxiliary Electric Heater Kits RXBHHeater Kits include circuit breakers which meet UL and cUL
requirements for service disconnect. See the Electric Heat
Electrical Data in this specification sheet for specific Heater Kit
Model numbers.
Combustible Floor
Base Model Number
RXHB-17
RXHB-21
RXHB-24
Model Cabinet Size
17
21
24
• Jumper Bar Kit 3 Ckt. to 1 Ckt. RXBJ-A31 is used to convert
single phase multiple three circuit units to a single supply
circuit. Kit includes cover and screw for line side terminals.
• Jumper Bar Kit 2 Ckt. to 1 Ckt. RXBJ-A21 is used to convert
single phase multiple two circuit units to a single supply circuit.
Kit includes cover and screw for line side terminals.
• Note: No jumper bar kit is available to convert three phase
multiple two circuit units to a single supply circuit.
• Auxiliary Horizontal Overflow Pan Accessory RXBMNominal Cooling
Capacity-Tons
11/2 - 3
31/2 - 5
Auxiliary Horizontal Overflow Pan
Accessory Model Number
RXBM-AC48
RXBM-AC61
• External Filter Rack RXHF-B17, B21, B24
Model Cabinet Size
17
21
24
Filter Size In. [mm]
16 x 20 [406 x 508]
20 x 20 [508 x 508]
25 x 20 [635 x 508]
Part Number*
RXHF-B17
RXHF-B21
RXHF-B24
A
16.90
20.40
25.00
*Accommodates 1" filter
RXHF-B
RXHF-
11/2⬙
[38 mm]
B
B
14
A
A
B
20.77
20.77
21.04
• Horizontal Adapter Kit RXHHThis horizontal adapter kit is used to convert Upflow/Downflow
only models to horizontal flow. See the following table to order
proper horizontal adapter kit.
Horizontal Adapter Kit
Horizontal Adapter Kit
Model Number (Single Qty.) Model Number (10-Pack Qty.)
2414
RXHH-A01
RXHH-A01 x 10
2417
RXHH-A02
RXHH-A02 x 10
3617/3621
RXHH-A03
RXHH-A03 x 10
3821/4821/4824
RXHH-A04
RXHH-A04 x 10
8024
RXHH-A05
RXHH-A05 x 10
Coil Model
• External Filter Base RXHFModel Cabinet Size
17
21
24
Filter Size In. [mm]
16 x 20 [406 x 508]
20 x 20 [508 x 508]
25 x 20 [635 x 508]
*Accommodates 1" or 2" filter
[ ] Designates Metric Conversions
Part Number*
RXHF-17
RXHF-21
RXHF-24
A
15.70
19.20
22.70
B
17.5
21.0
25.5
Air
Limited Warranty
RHML Series
GENERAL TERMS OF LIMITED WARRANTY*
Rheem will furnish a replacement for any part of this product
which fails in normal use and service within the applicable
periods stated, in accordance with the terms of the limited
warranty.
Conditional Parts (Registration Required) ..........Ten (10) Years
*For complete details of the Limited and Conditional Warranties, including
applicable terms and conditions, contact your local contractor or the
Manufacturer for a copy of the product warranty certificate.
15
The new degree of comfort.™
In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.
Rheem Heating, Cooling & Water Heating • P.O. Box 17010
Fort Smith, Arkansas 72917 • www.rheem.com
Rheem Canada Ltd./Ltée • 125 Edgeware Road, Unit 1
Brampton, Ontario • L6Y 0P5
PRINTED IN U.S.A 03/12 QG FORM NO. H11-546